Rcs.iss do not have dedicated IP addresses, only leased ones.

When creating a new Rcs.is, we lease it a static IP address from an available pool. This address remains associated with the Rcs.is until a user chooses to destroy their Rcs.is, in which case the address returns to the available pool.

However, in addition to the Rcs.is’s static IP, you can have one Reserved IP address and up to 16 IPv6 addresses, depending on which datacenter the Rcs.is resides in.